R: [Live-devel] testMPEG4VideoStreamer: another question...

Tue May 11 13:28:11 PDT 2004

You can download the file (named sample.m4v, fps 24.5) from the URL http://mio.discoremoto.virgilio.it/lazzalor/
I'm waiting for your response..

THANX!!!

BYE
Lorenzo 

-----Messaggio originale-----
Da: live-devel-bounces at ns.live.com [mailto:live-devel-bounces at ns.live.com] Per conto di Ross Finlayson
Inviato: lunedì 10 maggio 2004 19.12
A: LIVE.COM Streaming Media - development & use
Oggetto: Re: [Live-devel] testMPEG4VideoStreamer: another question...

At 06:12 AM 5/10/04, you wrote:
>Is it possible to set the frame-rate of the MPEG4 stream over RTP?

Lorenzo,

The frame rate of the stream is determined by timing information that's in the MPEG-4 data itself (specifically, in the "Video Object Plane" header in the MPEG-4 data).  The "LIVE.COM Streaming Media" code (specifically, "MPEG4VideoStreamFramer" object) reads this information to figure out the rate at which to send data.

So, if "testMPEG4VideoStreamer" is sending data at the incorrect rate, then either 1/ Your input MPEG-4 video data has incorrect timing information (in the "Video Object Plane" header), or 2/ There is a problem in the LIVE.COM "MPEG4VideoStreamFramer" that is causing it to infer incorrect timing information from your MPEG-4  video data.

The only way I can know for sure is to examine an example of your MPEG-4 video data.  Could you please put a copy on a web (or FTP) site, and send the URL, so I can take a look at it?

	Ross Finlayson
	LIVE.COM
	<http://www.live.com/>

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